Merge branch 'ks/doc-checkout-previous'
[git] / builtin / remote.c
1 #include "builtin.h"
2 #include "config.h"
3 #include "parse-options.h"
4 #include "transport.h"
5 #include "remote.h"
6 #include "string-list.h"
7 #include "strbuf.h"
8 #include "run-command.h"
9 #include "refs.h"
10 #include "argv-array.h"
11
12 static const char * const builtin_remote_usage[] = {
13         N_("git remote [-v | --verbose]"),
14         N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags | --no-tags] [--mirror=<fetch|push>] <name> <url>"),
15         N_("git remote rename <old> <new>"),
16         N_("git remote remove <name>"),
17         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
18         N_("git remote [-v | --verbose] show [-n] <name>"),
19         N_("git remote prune [-n | --dry-run] <name>"),
20         N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
21         N_("git remote set-branches [--add] <name> <branch>..."),
22         N_("git remote get-url [--push] [--all] <name>"),
23         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
24         N_("git remote set-url --add <name> <newurl>"),
25         N_("git remote set-url --delete <name> <url>"),
26         NULL
27 };
28
29 static const char * const builtin_remote_add_usage[] = {
30         N_("git remote add [<options>] <name> <url>"),
31         NULL
32 };
33
34 static const char * const builtin_remote_rename_usage[] = {
35         N_("git remote rename <old> <new>"),
36         NULL
37 };
38
39 static const char * const builtin_remote_rm_usage[] = {
40         N_("git remote remove <name>"),
41         NULL
42 };
43
44 static const char * const builtin_remote_sethead_usage[] = {
45         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
46         NULL
47 };
48
49 static const char * const builtin_remote_setbranches_usage[] = {
50         N_("git remote set-branches <name> <branch>..."),
51         N_("git remote set-branches --add <name> <branch>..."),
52         NULL
53 };
54
55 static const char * const builtin_remote_show_usage[] = {
56         N_("git remote show [<options>] <name>"),
57         NULL
58 };
59
60 static const char * const builtin_remote_prune_usage[] = {
61         N_("git remote prune [<options>] <name>"),
62         NULL
63 };
64
65 static const char * const builtin_remote_update_usage[] = {
66         N_("git remote update [<options>] [<group> | <remote>]..."),
67         NULL
68 };
69
70 static const char * const builtin_remote_geturl_usage[] = {
71         N_("git remote get-url [--push] [--all] <name>"),
72         NULL
73 };
74
75 static const char * const builtin_remote_seturl_usage[] = {
76         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
77         N_("git remote set-url --add <name> <newurl>"),
78         N_("git remote set-url --delete <name> <url>"),
79         NULL
80 };
81
82 #define GET_REF_STATES (1<<0)
83 #define GET_HEAD_NAMES (1<<1)
84 #define GET_PUSH_REF_STATES (1<<2)
85
86 static int verbose;
87
88 static int fetch_remote(const char *name)
89 {
90         const char *argv[] = { "fetch", name, NULL, NULL };
91         if (verbose) {
92                 argv[1] = "-v";
93                 argv[2] = name;
94         }
95         printf_ln(_("Updating %s"), name);
96         if (run_command_v_opt(argv, RUN_GIT_CMD))
97                 return error(_("Could not fetch %s"), name);
98         return 0;
99 }
100
101 enum {
102         TAGS_UNSET = 0,
103         TAGS_DEFAULT = 1,
104         TAGS_SET = 2
105 };
106
107 #define MIRROR_NONE 0
108 #define MIRROR_FETCH 1
109 #define MIRROR_PUSH 2
110 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
111
112 static void add_branch(const char *key, const char *branchname,
113                        const char *remotename, int mirror, struct strbuf *tmp)
114 {
115         strbuf_reset(tmp);
116         strbuf_addch(tmp, '+');
117         if (mirror)
118                 strbuf_addf(tmp, "refs/%s:refs/%s",
119                                 branchname, branchname);
120         else
121                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
122                                 branchname, remotename, branchname);
123         git_config_set_multivar(key, tmp->buf, "^$", 0);
124 }
125
126 static const char mirror_advice[] =
127 N_("--mirror is dangerous and deprecated; please\n"
128    "\t use --mirror=fetch or --mirror=push instead");
129
130 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
131 {
132         unsigned *mirror = opt->value;
133         if (not)
134                 *mirror = MIRROR_NONE;
135         else if (!arg) {
136                 warning("%s", _(mirror_advice));
137                 *mirror = MIRROR_BOTH;
138         }
139         else if (!strcmp(arg, "fetch"))
140                 *mirror = MIRROR_FETCH;
141         else if (!strcmp(arg, "push"))
142                 *mirror = MIRROR_PUSH;
143         else
144                 return error(_("unknown mirror argument: %s"), arg);
145         return 0;
146 }
147
148 static int add(int argc, const char **argv)
149 {
150         int fetch = 0, fetch_tags = TAGS_DEFAULT;
151         unsigned mirror = MIRROR_NONE;
152         struct string_list track = STRING_LIST_INIT_NODUP;
153         const char *master = NULL;
154         struct remote *remote;
155         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
156         const char *name, *url;
157         int i;
158
159         struct option options[] = {
160                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
161                 OPT_SET_INT(0, "tags", &fetch_tags,
162                             N_("import all tags and associated objects when fetching"),
163                             TAGS_SET),
164                 OPT_SET_INT(0, NULL, &fetch_tags,
165                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
166                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
167                                 N_("branch(es) to track")),
168                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
169                 { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
170                         N_("set up remote as a mirror to push to or fetch from"),
171                         PARSE_OPT_OPTARG, parse_mirror_opt },
172                 OPT_END()
173         };
174
175         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
176                              0);
177
178         if (argc != 2)
179                 usage_with_options(builtin_remote_add_usage, options);
180
181         if (mirror && master)
182                 die(_("specifying a master branch makes no sense with --mirror"));
183         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
184                 die(_("specifying branches to track makes sense only with fetch mirrors"));
185
186         name = argv[0];
187         url = argv[1];
188
189         remote = remote_get(name);
190         if (remote_is_configured(remote, 1))
191                 die(_("remote %s already exists."), name);
192
193         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
194         if (!valid_fetch_refspec(buf2.buf))
195                 die(_("'%s' is not a valid remote name"), name);
196
197         strbuf_addf(&buf, "remote.%s.url", name);
198         git_config_set(buf.buf, url);
199
200         if (!mirror || mirror & MIRROR_FETCH) {
201                 strbuf_reset(&buf);
202                 strbuf_addf(&buf, "remote.%s.fetch", name);
203                 if (track.nr == 0)
204                         string_list_append(&track, "*");
205                 for (i = 0; i < track.nr; i++) {
206                         add_branch(buf.buf, track.items[i].string,
207                                    name, mirror, &buf2);
208                 }
209         }
210
211         if (mirror & MIRROR_PUSH) {
212                 strbuf_reset(&buf);
213                 strbuf_addf(&buf, "remote.%s.mirror", name);
214                 git_config_set(buf.buf, "true");
215         }
216
217         if (fetch_tags != TAGS_DEFAULT) {
218                 strbuf_reset(&buf);
219                 strbuf_addf(&buf, "remote.%s.tagopt", name);
220                 git_config_set(buf.buf,
221                                fetch_tags == TAGS_SET ? "--tags" : "--no-tags");
222         }
223
224         if (fetch && fetch_remote(name))
225                 return 1;
226
227         if (master) {
228                 strbuf_reset(&buf);
229                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
230
231                 strbuf_reset(&buf2);
232                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
233
234                 if (create_symref(buf.buf, buf2.buf, "remote add"))
235                         return error(_("Could not setup master '%s'"), master);
236         }
237
238         strbuf_release(&buf);
239         strbuf_release(&buf2);
240         string_list_clear(&track, 0);
241
242         return 0;
243 }
244
245 struct branch_info {
246         char *remote_name;
247         struct string_list merge;
248         enum { NO_REBASE, NORMAL_REBASE, INTERACTIVE_REBASE } rebase;
249 };
250
251 static struct string_list branch_list = STRING_LIST_INIT_NODUP;
252
253 static const char *abbrev_ref(const char *name, const char *prefix)
254 {
255         skip_prefix(name, prefix, &name);
256         return name;
257 }
258 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
259
260 static int config_read_branches(const char *key, const char *value, void *cb)
261 {
262         if (starts_with(key, "branch.")) {
263                 const char *orig_key = key;
264                 char *name;
265                 struct string_list_item *item;
266                 struct branch_info *info;
267                 enum { REMOTE, MERGE, REBASE } type;
268                 size_t key_len;
269
270                 key += 7;
271                 if (strip_suffix(key, ".remote", &key_len)) {
272                         name = xmemdupz(key, key_len);
273                         type = REMOTE;
274                 } else if (strip_suffix(key, ".merge", &key_len)) {
275                         name = xmemdupz(key, key_len);
276                         type = MERGE;
277                 } else if (strip_suffix(key, ".rebase", &key_len)) {
278                         name = xmemdupz(key, key_len);
279                         type = REBASE;
280                 } else
281                         return 0;
282
283                 item = string_list_insert(&branch_list, name);
284
285                 if (!item->util)
286                         item->util = xcalloc(1, sizeof(struct branch_info));
287                 info = item->util;
288                 if (type == REMOTE) {
289                         if (info->remote_name)
290                                 warning(_("more than one %s"), orig_key);
291                         info->remote_name = xstrdup(value);
292                 } else if (type == MERGE) {
293                         char *space = strchr(value, ' ');
294                         value = abbrev_branch(value);
295                         while (space) {
296                                 char *merge;
297                                 merge = xstrndup(value, space - value);
298                                 string_list_append(&info->merge, merge);
299                                 value = abbrev_branch(space + 1);
300                                 space = strchr(value, ' ');
301                         }
302                         string_list_append(&info->merge, xstrdup(value));
303                 } else {
304                         int v = git_parse_maybe_bool(value);
305                         if (v >= 0)
306                                 info->rebase = v;
307                         else if (!strcmp(value, "preserve"))
308                                 info->rebase = NORMAL_REBASE;
309                         else if (!strcmp(value, "interactive"))
310                                 info->rebase = INTERACTIVE_REBASE;
311                 }
312         }
313         return 0;
314 }
315
316 static void read_branches(void)
317 {
318         if (branch_list.nr)
319                 return;
320         git_config(config_read_branches, NULL);
321 }
322
323 struct ref_states {
324         struct remote *remote;
325         struct string_list new, stale, tracked, heads, push;
326         int queried;
327 };
328
329 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
330 {
331         struct ref *fetch_map = NULL, **tail = &fetch_map;
332         struct ref *ref, *stale_refs;
333         int i;
334
335         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
336                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
337                         die(_("Could not get fetch map for refspec %s"),
338                                 states->remote->fetch_refspec[i]);
339
340         states->new.strdup_strings = 1;
341         states->tracked.strdup_strings = 1;
342         states->stale.strdup_strings = 1;
343         for (ref = fetch_map; ref; ref = ref->next) {
344                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
345                         string_list_append(&states->new, abbrev_branch(ref->name));
346                 else
347                         string_list_append(&states->tracked, abbrev_branch(ref->name));
348         }
349         stale_refs = get_stale_heads(states->remote->fetch,
350                                      states->remote->fetch_refspec_nr, fetch_map);
351         for (ref = stale_refs; ref; ref = ref->next) {
352                 struct string_list_item *item =
353                         string_list_append(&states->stale, abbrev_branch(ref->name));
354                 item->util = xstrdup(ref->name);
355         }
356         free_refs(stale_refs);
357         free_refs(fetch_map);
358
359         string_list_sort(&states->new);
360         string_list_sort(&states->tracked);
361         string_list_sort(&states->stale);
362
363         return 0;
364 }
365
366 struct push_info {
367         char *dest;
368         int forced;
369         enum {
370                 PUSH_STATUS_CREATE = 0,
371                 PUSH_STATUS_DELETE,
372                 PUSH_STATUS_UPTODATE,
373                 PUSH_STATUS_FASTFORWARD,
374                 PUSH_STATUS_OUTOFDATE,
375                 PUSH_STATUS_NOTQUERIED
376         } status;
377 };
378
379 static int get_push_ref_states(const struct ref *remote_refs,
380         struct ref_states *states)
381 {
382         struct remote *remote = states->remote;
383         struct ref *ref, *local_refs, *push_map;
384         if (remote->mirror)
385                 return 0;
386
387         local_refs = get_local_heads();
388         push_map = copy_ref_list(remote_refs);
389
390         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
391                         remote->push_refspec, MATCH_REFS_NONE);
392
393         states->push.strdup_strings = 1;
394         for (ref = push_map; ref; ref = ref->next) {
395                 struct string_list_item *item;
396                 struct push_info *info;
397
398                 if (!ref->peer_ref)
399                         continue;
400                 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
401
402                 item = string_list_append(&states->push,
403                                           abbrev_branch(ref->peer_ref->name));
404                 item->util = xcalloc(1, sizeof(struct push_info));
405                 info = item->util;
406                 info->forced = ref->force;
407                 info->dest = xstrdup(abbrev_branch(ref->name));
408
409                 if (is_null_oid(&ref->new_oid)) {
410                         info->status = PUSH_STATUS_DELETE;
411                 } else if (!oidcmp(&ref->old_oid, &ref->new_oid))
412                         info->status = PUSH_STATUS_UPTODATE;
413                 else if (is_null_oid(&ref->old_oid))
414                         info->status = PUSH_STATUS_CREATE;
415                 else if (has_object_file(&ref->old_oid) &&
416                          ref_newer(&ref->new_oid, &ref->old_oid))
417                         info->status = PUSH_STATUS_FASTFORWARD;
418                 else
419                         info->status = PUSH_STATUS_OUTOFDATE;
420         }
421         free_refs(local_refs);
422         free_refs(push_map);
423         return 0;
424 }
425
426 static int get_push_ref_states_noquery(struct ref_states *states)
427 {
428         int i;
429         struct remote *remote = states->remote;
430         struct string_list_item *item;
431         struct push_info *info;
432
433         if (remote->mirror)
434                 return 0;
435
436         states->push.strdup_strings = 1;
437         if (!remote->push_refspec_nr) {
438                 item = string_list_append(&states->push, _("(matching)"));
439                 info = item->util = xcalloc(1, sizeof(struct push_info));
440                 info->status = PUSH_STATUS_NOTQUERIED;
441                 info->dest = xstrdup(item->string);
442         }
443         for (i = 0; i < remote->push_refspec_nr; i++) {
444                 struct refspec *spec = remote->push + i;
445                 if (spec->matching)
446                         item = string_list_append(&states->push, _("(matching)"));
447                 else if (strlen(spec->src))
448                         item = string_list_append(&states->push, spec->src);
449                 else
450                         item = string_list_append(&states->push, _("(delete)"));
451
452                 info = item->util = xcalloc(1, sizeof(struct push_info));
453                 info->forced = spec->force;
454                 info->status = PUSH_STATUS_NOTQUERIED;
455                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
456         }
457         return 0;
458 }
459
460 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
461 {
462         struct ref *ref, *matches;
463         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
464         struct refspec refspec;
465
466         refspec.force = 0;
467         refspec.pattern = 1;
468         refspec.src = refspec.dst = "refs/heads/*";
469         states->heads.strdup_strings = 1;
470         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
471         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
472                                     fetch_map, 1);
473         for (ref = matches; ref; ref = ref->next)
474                 string_list_append(&states->heads, abbrev_branch(ref->name));
475
476         free_refs(fetch_map);
477         free_refs(matches);
478
479         return 0;
480 }
481
482 struct known_remote {
483         struct known_remote *next;
484         struct remote *remote;
485 };
486
487 struct known_remotes {
488         struct remote *to_delete;
489         struct known_remote *list;
490 };
491
492 static int add_known_remote(struct remote *remote, void *cb_data)
493 {
494         struct known_remotes *all = cb_data;
495         struct known_remote *r;
496
497         if (!strcmp(all->to_delete->name, remote->name))
498                 return 0;
499
500         r = xmalloc(sizeof(*r));
501         r->remote = remote;
502         r->next = all->list;
503         all->list = r;
504         return 0;
505 }
506
507 struct branches_for_remote {
508         struct remote *remote;
509         struct string_list *branches, *skipped;
510         struct known_remotes *keep;
511 };
512
513 static int add_branch_for_removal(const char *refname,
514         const struct object_id *oid, int flags, void *cb_data)
515 {
516         struct branches_for_remote *branches = cb_data;
517         struct refspec refspec;
518         struct known_remote *kr;
519
520         memset(&refspec, 0, sizeof(refspec));
521         refspec.dst = (char *)refname;
522         if (remote_find_tracking(branches->remote, &refspec))
523                 return 0;
524
525         /* don't delete a branch if another remote also uses it */
526         for (kr = branches->keep->list; kr; kr = kr->next) {
527                 memset(&refspec, 0, sizeof(refspec));
528                 refspec.dst = (char *)refname;
529                 if (!remote_find_tracking(kr->remote, &refspec))
530                         return 0;
531         }
532
533         /* don't delete non-remote-tracking refs */
534         if (!starts_with(refname, "refs/remotes/")) {
535                 /* advise user how to delete local branches */
536                 if (starts_with(refname, "refs/heads/"))
537                         string_list_append(branches->skipped,
538                                            abbrev_branch(refname));
539                 /* silently skip over other non-remote refs */
540                 return 0;
541         }
542
543         string_list_append(branches->branches, refname);
544
545         return 0;
546 }
547
548 struct rename_info {
549         const char *old;
550         const char *new;
551         struct string_list *remote_branches;
552 };
553
554 static int read_remote_branches(const char *refname,
555         const struct object_id *oid, int flags, void *cb_data)
556 {
557         struct rename_info *rename = cb_data;
558         struct strbuf buf = STRBUF_INIT;
559         struct string_list_item *item;
560         int flag;
561         const char *symref;
562
563         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
564         if (starts_with(refname, buf.buf)) {
565                 item = string_list_append(rename->remote_branches, xstrdup(refname));
566                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
567                                             NULL, &flag);
568                 if (symref && (flag & REF_ISSYMREF))
569                         item->util = xstrdup(symref);
570                 else
571                         item->util = NULL;
572         }
573         strbuf_release(&buf);
574
575         return 0;
576 }
577
578 static int migrate_file(struct remote *remote)
579 {
580         struct strbuf buf = STRBUF_INIT;
581         int i;
582
583         strbuf_addf(&buf, "remote.%s.url", remote->name);
584         for (i = 0; i < remote->url_nr; i++)
585                 git_config_set_multivar(buf.buf, remote->url[i], "^$", 0);
586         strbuf_reset(&buf);
587         strbuf_addf(&buf, "remote.%s.push", remote->name);
588         for (i = 0; i < remote->push_refspec_nr; i++)
589                 git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0);
590         strbuf_reset(&buf);
591         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
592         for (i = 0; i < remote->fetch_refspec_nr; i++)
593                 git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0);
594         if (remote->origin == REMOTE_REMOTES)
595                 unlink_or_warn(git_path("remotes/%s", remote->name));
596         else if (remote->origin == REMOTE_BRANCHES)
597                 unlink_or_warn(git_path("branches/%s", remote->name));
598         strbuf_release(&buf);
599
600         return 0;
601 }
602
603 static int mv(int argc, const char **argv)
604 {
605         struct option options[] = {
606                 OPT_END()
607         };
608         struct remote *oldremote, *newremote;
609         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
610                 old_remote_context = STRBUF_INIT;
611         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
612         struct rename_info rename;
613         int i, refspec_updated = 0;
614
615         if (argc != 3)
616                 usage_with_options(builtin_remote_rename_usage, options);
617
618         rename.old = argv[1];
619         rename.new = argv[2];
620         rename.remote_branches = &remote_branches;
621
622         oldremote = remote_get(rename.old);
623         if (!remote_is_configured(oldremote, 1))
624                 die(_("No such remote: %s"), rename.old);
625
626         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
627                 return migrate_file(oldremote);
628
629         newremote = remote_get(rename.new);
630         if (remote_is_configured(newremote, 1))
631                 die(_("remote %s already exists."), rename.new);
632
633         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
634         if (!valid_fetch_refspec(buf.buf))
635                 die(_("'%s' is not a valid remote name"), rename.new);
636
637         strbuf_reset(&buf);
638         strbuf_addf(&buf, "remote.%s", rename.old);
639         strbuf_addf(&buf2, "remote.%s", rename.new);
640         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
641                 return error(_("Could not rename config section '%s' to '%s'"),
642                                 buf.buf, buf2.buf);
643
644         strbuf_reset(&buf);
645         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
646         git_config_set_multivar(buf.buf, NULL, NULL, 1);
647         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
648         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
649                 char *ptr;
650
651                 strbuf_reset(&buf2);
652                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
653                 ptr = strstr(buf2.buf, old_remote_context.buf);
654                 if (ptr) {
655                         refspec_updated = 1;
656                         strbuf_splice(&buf2,
657                                       ptr-buf2.buf + strlen(":refs/remotes/"),
658                                       strlen(rename.old), rename.new,
659                                       strlen(rename.new));
660                 } else
661                         warning(_("Not updating non-default fetch refspec\n"
662                                   "\t%s\n"
663                                   "\tPlease update the configuration manually if necessary."),
664                                 buf2.buf);
665
666                 git_config_set_multivar(buf.buf, buf2.buf, "^$", 0);
667         }
668
669         read_branches();
670         for (i = 0; i < branch_list.nr; i++) {
671                 struct string_list_item *item = branch_list.items + i;
672                 struct branch_info *info = item->util;
673                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
674                         strbuf_reset(&buf);
675                         strbuf_addf(&buf, "branch.%s.remote", item->string);
676                         git_config_set(buf.buf, rename.new);
677                 }
678         }
679
680         if (!refspec_updated)
681                 return 0;
682
683         /*
684          * First remove symrefs, then rename the rest, finally create
685          * the new symrefs.
686          */
687         for_each_ref(read_remote_branches, &rename);
688         for (i = 0; i < remote_branches.nr; i++) {
689                 struct string_list_item *item = remote_branches.items + i;
690                 int flag = 0;
691                 struct object_id oid;
692
693                 read_ref_full(item->string, RESOLVE_REF_READING, &oid, &flag);
694                 if (!(flag & REF_ISSYMREF))
695                         continue;
696                 if (delete_ref(NULL, item->string, NULL, REF_NO_DEREF))
697                         die(_("deleting '%s' failed"), item->string);
698         }
699         for (i = 0; i < remote_branches.nr; i++) {
700                 struct string_list_item *item = remote_branches.items + i;
701
702                 if (item->util)
703                         continue;
704                 strbuf_reset(&buf);
705                 strbuf_addstr(&buf, item->string);
706                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
707                                 rename.new, strlen(rename.new));
708                 strbuf_reset(&buf2);
709                 strbuf_addf(&buf2, "remote: renamed %s to %s",
710                                 item->string, buf.buf);
711                 if (rename_ref(item->string, buf.buf, buf2.buf))
712                         die(_("renaming '%s' failed"), item->string);
713         }
714         for (i = 0; i < remote_branches.nr; i++) {
715                 struct string_list_item *item = remote_branches.items + i;
716
717                 if (!item->util)
718                         continue;
719                 strbuf_reset(&buf);
720                 strbuf_addstr(&buf, item->string);
721                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
722                                 rename.new, strlen(rename.new));
723                 strbuf_reset(&buf2);
724                 strbuf_addstr(&buf2, item->util);
725                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
726                                 rename.new, strlen(rename.new));
727                 strbuf_reset(&buf3);
728                 strbuf_addf(&buf3, "remote: renamed %s to %s",
729                                 item->string, buf.buf);
730                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
731                         die(_("creating '%s' failed"), buf.buf);
732         }
733         return 0;
734 }
735
736 static int rm(int argc, const char **argv)
737 {
738         struct option options[] = {
739                 OPT_END()
740         };
741         struct remote *remote;
742         struct strbuf buf = STRBUF_INIT;
743         struct known_remotes known_remotes = { NULL, NULL };
744         struct string_list branches = STRING_LIST_INIT_DUP;
745         struct string_list skipped = STRING_LIST_INIT_DUP;
746         struct branches_for_remote cb_data;
747         int i, result;
748
749         memset(&cb_data, 0, sizeof(cb_data));
750         cb_data.branches = &branches;
751         cb_data.skipped = &skipped;
752         cb_data.keep = &known_remotes;
753
754         if (argc != 2)
755                 usage_with_options(builtin_remote_rm_usage, options);
756
757         remote = remote_get(argv[1]);
758         if (!remote_is_configured(remote, 1))
759                 die(_("No such remote: %s"), argv[1]);
760
761         known_remotes.to_delete = remote;
762         for_each_remote(add_known_remote, &known_remotes);
763
764         read_branches();
765         for (i = 0; i < branch_list.nr; i++) {
766                 struct string_list_item *item = branch_list.items + i;
767                 struct branch_info *info = item->util;
768                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
769                         const char *keys[] = { "remote", "merge", NULL }, **k;
770                         for (k = keys; *k; k++) {
771                                 strbuf_reset(&buf);
772                                 strbuf_addf(&buf, "branch.%s.%s",
773                                                 item->string, *k);
774                                 result = git_config_set_gently(buf.buf, NULL);
775                                 if (result && result != CONFIG_NOTHING_SET)
776                                         die(_("could not unset '%s'"), buf.buf);
777                         }
778                 }
779         }
780
781         /*
782          * We cannot just pass a function to for_each_ref() which deletes
783          * the branches one by one, since for_each_ref() relies on cached
784          * refs, which are invalidated when deleting a branch.
785          */
786         cb_data.remote = remote;
787         result = for_each_ref(add_branch_for_removal, &cb_data);
788         strbuf_release(&buf);
789
790         if (!result)
791                 result = delete_refs("remote: remove", &branches, REF_NO_DEREF);
792         string_list_clear(&branches, 0);
793
794         if (skipped.nr) {
795                 fprintf_ln(stderr,
796                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
797                               "to delete it, use:",
798                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
799                               "to delete them, use:",
800                               skipped.nr));
801                 for (i = 0; i < skipped.nr; i++)
802                         fprintf(stderr, "  git branch -d %s\n",
803                                 skipped.items[i].string);
804         }
805         string_list_clear(&skipped, 0);
806
807         if (!result) {
808                 strbuf_addf(&buf, "remote.%s", remote->name);
809                 if (git_config_rename_section(buf.buf, NULL) < 1)
810                         return error(_("Could not remove config section '%s'"), buf.buf);
811         }
812
813         return result;
814 }
815
816 static void clear_push_info(void *util, const char *string)
817 {
818         struct push_info *info = util;
819         free(info->dest);
820         free(info);
821 }
822
823 static void free_remote_ref_states(struct ref_states *states)
824 {
825         string_list_clear(&states->new, 0);
826         string_list_clear(&states->stale, 1);
827         string_list_clear(&states->tracked, 0);
828         string_list_clear(&states->heads, 0);
829         string_list_clear_func(&states->push, clear_push_info);
830 }
831
832 static int append_ref_to_tracked_list(const char *refname,
833         const struct object_id *oid, int flags, void *cb_data)
834 {
835         struct ref_states *states = cb_data;
836         struct refspec refspec;
837
838         if (flags & REF_ISSYMREF)
839                 return 0;
840
841         memset(&refspec, 0, sizeof(refspec));
842         refspec.dst = (char *)refname;
843         if (!remote_find_tracking(states->remote, &refspec))
844                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
845
846         return 0;
847 }
848
849 static int get_remote_ref_states(const char *name,
850                                  struct ref_states *states,
851                                  int query)
852 {
853         struct transport *transport;
854         const struct ref *remote_refs;
855
856         states->remote = remote_get(name);
857         if (!states->remote)
858                 return error(_("No such remote: %s"), name);
859
860         read_branches();
861
862         if (query) {
863                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
864                         states->remote->url[0] : NULL);
865                 remote_refs = transport_get_remote_refs(transport);
866                 transport_disconnect(transport);
867
868                 states->queried = 1;
869                 if (query & GET_REF_STATES)
870                         get_ref_states(remote_refs, states);
871                 if (query & GET_HEAD_NAMES)
872                         get_head_names(remote_refs, states);
873                 if (query & GET_PUSH_REF_STATES)
874                         get_push_ref_states(remote_refs, states);
875         } else {
876                 for_each_ref(append_ref_to_tracked_list, states);
877                 string_list_sort(&states->tracked);
878                 get_push_ref_states_noquery(states);
879         }
880
881         return 0;
882 }
883
884 struct show_info {
885         struct string_list *list;
886         struct ref_states *states;
887         int width, width2;
888         int any_rebase;
889 };
890
891 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
892 {
893         struct show_info *info = cb_data;
894         int n = strlen(item->string);
895         if (n > info->width)
896                 info->width = n;
897         string_list_insert(info->list, item->string);
898         return 0;
899 }
900
901 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
902 {
903         struct show_info *info = cb_data;
904         struct ref_states *states = info->states;
905         const char *name = item->string;
906
907         if (states->queried) {
908                 const char *fmt = "%s";
909                 const char *arg = "";
910                 if (string_list_has_string(&states->new, name)) {
911                         fmt = _(" new (next fetch will store in remotes/%s)");
912                         arg = states->remote->name;
913                 } else if (string_list_has_string(&states->tracked, name))
914                         arg = _(" tracked");
915                 else if (string_list_has_string(&states->stale, name))
916                         arg = _(" stale (use 'git remote prune' to remove)");
917                 else
918                         arg = _(" ???");
919                 printf("    %-*s", info->width, name);
920                 printf(fmt, arg);
921                 printf("\n");
922         } else
923                 printf("    %s\n", name);
924
925         return 0;
926 }
927
928 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
929 {
930         struct show_info *show_info = cb_data;
931         struct ref_states *states = show_info->states;
932         struct branch_info *branch_info = branch_item->util;
933         struct string_list_item *item;
934         int n;
935
936         if (!branch_info->merge.nr || !branch_info->remote_name ||
937             strcmp(states->remote->name, branch_info->remote_name))
938                 return 0;
939         if ((n = strlen(branch_item->string)) > show_info->width)
940                 show_info->width = n;
941         if (branch_info->rebase)
942                 show_info->any_rebase = 1;
943
944         item = string_list_insert(show_info->list, branch_item->string);
945         item->util = branch_info;
946
947         return 0;
948 }
949
950 static int show_local_info_item(struct string_list_item *item, void *cb_data)
951 {
952         struct show_info *show_info = cb_data;
953         struct branch_info *branch_info = item->util;
954         struct string_list *merge = &branch_info->merge;
955         int width = show_info->width + 4;
956         int i;
957
958         if (branch_info->rebase && branch_info->merge.nr > 1) {
959                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
960                         item->string);
961                 return 0;
962         }
963
964         printf("    %-*s ", show_info->width, item->string);
965         if (branch_info->rebase) {
966                 printf_ln(branch_info->rebase == INTERACTIVE_REBASE
967                           ? _("rebases interactively onto remote %s")
968                           : _("rebases onto remote %s"), merge->items[0].string);
969                 return 0;
970         } else if (show_info->any_rebase) {
971                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
972                 width++;
973         } else {
974                 printf_ln(_("merges with remote %s"), merge->items[0].string);
975         }
976         for (i = 1; i < merge->nr; i++)
977                 printf(_("%-*s    and with remote %s\n"), width, "",
978                        merge->items[i].string);
979
980         return 0;
981 }
982
983 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
984 {
985         struct show_info *show_info = cb_data;
986         struct push_info *push_info = push_item->util;
987         struct string_list_item *item;
988         int n;
989         if ((n = strlen(push_item->string)) > show_info->width)
990                 show_info->width = n;
991         if ((n = strlen(push_info->dest)) > show_info->width2)
992                 show_info->width2 = n;
993         item = string_list_append(show_info->list, push_item->string);
994         item->util = push_item->util;
995         return 0;
996 }
997
998 /*
999  * Sorting comparison for a string list that has push_info
1000  * structs in its util field
1001  */
1002 static int cmp_string_with_push(const void *va, const void *vb)
1003 {
1004         const struct string_list_item *a = va;
1005         const struct string_list_item *b = vb;
1006         const struct push_info *a_push = a->util;
1007         const struct push_info *b_push = b->util;
1008         int cmp = strcmp(a->string, b->string);
1009         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1010 }
1011
1012 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1013 {
1014         struct show_info *show_info = cb_data;
1015         struct push_info *push_info = item->util;
1016         const char *src = item->string, *status = NULL;
1017
1018         switch (push_info->status) {
1019         case PUSH_STATUS_CREATE:
1020                 status = _("create");
1021                 break;
1022         case PUSH_STATUS_DELETE:
1023                 status = _("delete");
1024                 src = _("(none)");
1025                 break;
1026         case PUSH_STATUS_UPTODATE:
1027                 status = _("up to date");
1028                 break;
1029         case PUSH_STATUS_FASTFORWARD:
1030                 status = _("fast-forwardable");
1031                 break;
1032         case PUSH_STATUS_OUTOFDATE:
1033                 status = _("local out of date");
1034                 break;
1035         case PUSH_STATUS_NOTQUERIED:
1036                 break;
1037         }
1038         if (status) {
1039                 if (push_info->forced)
1040                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1041                                show_info->width2, push_info->dest, status);
1042                 else
1043                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1044                                show_info->width2, push_info->dest, status);
1045         } else {
1046                 if (push_info->forced)
1047                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1048                                push_info->dest);
1049                 else
1050                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1051                                push_info->dest);
1052         }
1053         return 0;
1054 }
1055
1056 static int get_one_entry(struct remote *remote, void *priv)
1057 {
1058         struct string_list *list = priv;
1059         struct strbuf url_buf = STRBUF_INIT;
1060         const char **url;
1061         int i, url_nr;
1062
1063         if (remote->url_nr > 0) {
1064                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1065                 string_list_append(list, remote->name)->util =
1066                                 strbuf_detach(&url_buf, NULL);
1067         } else
1068                 string_list_append(list, remote->name)->util = NULL;
1069         if (remote->pushurl_nr) {
1070                 url = remote->pushurl;
1071                 url_nr = remote->pushurl_nr;
1072         } else {
1073                 url = remote->url;
1074                 url_nr = remote->url_nr;
1075         }
1076         for (i = 0; i < url_nr; i++)
1077         {
1078                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1079                 string_list_append(list, remote->name)->util =
1080                                 strbuf_detach(&url_buf, NULL);
1081         }
1082
1083         return 0;
1084 }
1085
1086 static int show_all(void)
1087 {
1088         struct string_list list = STRING_LIST_INIT_NODUP;
1089         int result;
1090
1091         list.strdup_strings = 1;
1092         result = for_each_remote(get_one_entry, &list);
1093
1094         if (!result) {
1095                 int i;
1096
1097                 string_list_sort(&list);
1098                 for (i = 0; i < list.nr; i++) {
1099                         struct string_list_item *item = list.items + i;
1100                         if (verbose)
1101                                 printf("%s\t%s\n", item->string,
1102                                         item->util ? (const char *)item->util : "");
1103                         else {
1104                                 if (i && !strcmp((item - 1)->string, item->string))
1105                                         continue;
1106                                 printf("%s\n", item->string);
1107                         }
1108                 }
1109         }
1110         string_list_clear(&list, 1);
1111         return result;
1112 }
1113
1114 static int show(int argc, const char **argv)
1115 {
1116         int no_query = 0, result = 0, query_flag = 0;
1117         struct option options[] = {
1118                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1119                 OPT_END()
1120         };
1121         struct ref_states states;
1122         struct string_list info_list = STRING_LIST_INIT_NODUP;
1123         struct show_info info;
1124
1125         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1126                              0);
1127
1128         if (argc < 1)
1129                 return show_all();
1130
1131         if (!no_query)
1132                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1133
1134         memset(&states, 0, sizeof(states));
1135         memset(&info, 0, sizeof(info));
1136         info.states = &states;
1137         info.list = &info_list;
1138         for (; argc; argc--, argv++) {
1139                 int i;
1140                 const char **url;
1141                 int url_nr;
1142
1143                 get_remote_ref_states(*argv, &states, query_flag);
1144
1145                 printf_ln(_("* remote %s"), *argv);
1146                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1147                        states.remote->url[0] : _("(no URL)"));
1148                 if (states.remote->pushurl_nr) {
1149                         url = states.remote->pushurl;
1150                         url_nr = states.remote->pushurl_nr;
1151                 } else {
1152                         url = states.remote->url;
1153                         url_nr = states.remote->url_nr;
1154                 }
1155                 for (i = 0; i < url_nr; i++)
1156                         /*
1157                          * TRANSLATORS: the colon ':' should align
1158                          * with the one in " Fetch URL: %s"
1159                          * translation.
1160                          */
1161                         printf_ln(_("  Push  URL: %s"), url[i]);
1162                 if (!i)
1163                         printf_ln(_("  Push  URL: %s"), _("(no URL)"));
1164                 if (no_query)
1165                         printf_ln(_("  HEAD branch: %s"), _("(not queried)"));
1166                 else if (!states.heads.nr)
1167                         printf_ln(_("  HEAD branch: %s"), _("(unknown)"));
1168                 else if (states.heads.nr == 1)
1169                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1170                 else {
1171                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1172                                  " may be one of the following):\n"));
1173                         for (i = 0; i < states.heads.nr; i++)
1174                                 printf("    %s\n", states.heads.items[i].string);
1175                 }
1176
1177                 /* remote branch info */
1178                 info.width = 0;
1179                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1180                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1181                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1182                 if (info.list->nr)
1183                         printf_ln(Q_("  Remote branch:%s",
1184                                      "  Remote branches:%s",
1185                                      info.list->nr),
1186                                   no_query ? _(" (status not queried)") : "");
1187                 for_each_string_list(info.list, show_remote_info_item, &info);
1188                 string_list_clear(info.list, 0);
1189
1190                 /* git pull info */
1191                 info.width = 0;
1192                 info.any_rebase = 0;
1193                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1194                 if (info.list->nr)
1195                         printf_ln(Q_("  Local branch configured for 'git pull':",
1196                                      "  Local branches configured for 'git pull':",
1197                                      info.list->nr));
1198                 for_each_string_list(info.list, show_local_info_item, &info);
1199                 string_list_clear(info.list, 0);
1200
1201                 /* git push info */
1202                 if (states.remote->mirror)
1203                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1204
1205                 info.width = info.width2 = 0;
1206                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1207                 QSORT(info.list->items, info.list->nr, cmp_string_with_push);
1208                 if (info.list->nr)
1209                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1210                                      "  Local refs configured for 'git push'%s:",
1211                                      info.list->nr),
1212                                   no_query ? _(" (status not queried)") : "");
1213                 for_each_string_list(info.list, show_push_info_item, &info);
1214                 string_list_clear(info.list, 0);
1215
1216                 free_remote_ref_states(&states);
1217         }
1218
1219         return result;
1220 }
1221
1222 static int set_head(int argc, const char **argv)
1223 {
1224         int i, opt_a = 0, opt_d = 0, result = 0;
1225         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1226         char *head_name = NULL;
1227
1228         struct option options[] = {
1229                 OPT_BOOL('a', "auto", &opt_a,
1230                          N_("set refs/remotes/<name>/HEAD according to remote")),
1231                 OPT_BOOL('d', "delete", &opt_d,
1232                          N_("delete refs/remotes/<name>/HEAD")),
1233                 OPT_END()
1234         };
1235         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1236                              0);
1237         if (argc)
1238                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1239
1240         if (!opt_a && !opt_d && argc == 2) {
1241                 head_name = xstrdup(argv[1]);
1242         } else if (opt_a && !opt_d && argc == 1) {
1243                 struct ref_states states;
1244                 memset(&states, 0, sizeof(states));
1245                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1246                 if (!states.heads.nr)
1247                         result |= error(_("Cannot determine remote HEAD"));
1248                 else if (states.heads.nr > 1) {
1249                         result |= error(_("Multiple remote HEAD branches. "
1250                                           "Please choose one explicitly with:"));
1251                         for (i = 0; i < states.heads.nr; i++)
1252                                 fprintf(stderr, "  git remote set-head %s %s\n",
1253                                         argv[0], states.heads.items[i].string);
1254                 } else
1255                         head_name = xstrdup(states.heads.items[0].string);
1256                 free_remote_ref_states(&states);
1257         } else if (opt_d && !opt_a && argc == 1) {
1258                 if (delete_ref(NULL, buf.buf, NULL, REF_NO_DEREF))
1259                         result |= error(_("Could not delete %s"), buf.buf);
1260         } else
1261                 usage_with_options(builtin_remote_sethead_usage, options);
1262
1263         if (head_name) {
1264                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1265                 /* make sure it's valid */
1266                 if (!ref_exists(buf2.buf))
1267                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1268                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1269                         result |= error(_("Could not setup %s"), buf.buf);
1270                 if (opt_a)
1271                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1272                 free(head_name);
1273         }
1274
1275         strbuf_release(&buf);
1276         strbuf_release(&buf2);
1277         return result;
1278 }
1279
1280 static int prune_remote(const char *remote, int dry_run)
1281 {
1282         int result = 0;
1283         struct ref_states states;
1284         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1285         struct string_list_item *item;
1286         const char *dangling_msg = dry_run
1287                 ? _(" %s will become dangling!")
1288                 : _(" %s has become dangling!");
1289
1290         memset(&states, 0, sizeof(states));
1291         get_remote_ref_states(remote, &states, GET_REF_STATES);
1292
1293         if (!states.stale.nr) {
1294                 free_remote_ref_states(&states);
1295                 return 0;
1296         }
1297
1298         printf_ln(_("Pruning %s"), remote);
1299         printf_ln(_("URL: %s"),
1300                   states.remote->url_nr
1301                   ? states.remote->url[0]
1302                   : _("(no URL)"));
1303
1304         for_each_string_list_item(item, &states.stale)
1305                 string_list_append(&refs_to_prune, item->util);
1306         string_list_sort(&refs_to_prune);
1307
1308         if (!dry_run)
1309                 result |= delete_refs("remote: prune", &refs_to_prune, 0);
1310
1311         for_each_string_list_item(item, &states.stale) {
1312                 const char *refname = item->util;
1313
1314                 if (dry_run)
1315                         printf_ln(_(" * [would prune] %s"),
1316                                abbrev_ref(refname, "refs/remotes/"));
1317                 else
1318                         printf_ln(_(" * [pruned] %s"),
1319                                abbrev_ref(refname, "refs/remotes/"));
1320         }
1321
1322         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1323
1324         string_list_clear(&refs_to_prune, 0);
1325         free_remote_ref_states(&states);
1326         return result;
1327 }
1328
1329 static int prune(int argc, const char **argv)
1330 {
1331         int dry_run = 0, result = 0;
1332         struct option options[] = {
1333                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1334                 OPT_END()
1335         };
1336
1337         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1338                              0);
1339
1340         if (argc < 1)
1341                 usage_with_options(builtin_remote_prune_usage, options);
1342
1343         for (; argc; argc--, argv++)
1344                 result |= prune_remote(*argv, dry_run);
1345
1346         return result;
1347 }
1348
1349 static int get_remote_default(const char *key, const char *value, void *priv)
1350 {
1351         if (strcmp(key, "remotes.default") == 0) {
1352                 int *found = priv;
1353                 *found = 1;
1354         }
1355         return 0;
1356 }
1357
1358 static int update(int argc, const char **argv)
1359 {
1360         int i, prune = -1;
1361         struct option options[] = {
1362                 OPT_BOOL('p', "prune", &prune,
1363                          N_("prune remotes after fetching")),
1364                 OPT_END()
1365         };
1366         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1367         int default_defined = 0;
1368         int retval;
1369
1370         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1371                              PARSE_OPT_KEEP_ARGV0);
1372
1373         argv_array_push(&fetch_argv, "fetch");
1374
1375         if (prune != -1)
1376                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1377         if (verbose)
1378                 argv_array_push(&fetch_argv, "-v");
1379         argv_array_push(&fetch_argv, "--multiple");
1380         if (argc < 2)
1381                 argv_array_push(&fetch_argv, "default");
1382         for (i = 1; i < argc; i++)
1383                 argv_array_push(&fetch_argv, argv[i]);
1384
1385         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1386                 git_config(get_remote_default, &default_defined);
1387                 if (!default_defined) {
1388                         argv_array_pop(&fetch_argv);
1389                         argv_array_push(&fetch_argv, "--all");
1390                 }
1391         }
1392
1393         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1394         argv_array_clear(&fetch_argv);
1395         return retval;
1396 }
1397
1398 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1399 {
1400         return git_config_set_multivar_gently(key, NULL, NULL, 1);
1401 }
1402
1403 static void add_branches(struct remote *remote, const char **branches,
1404                          const char *key)
1405 {
1406         const char *remotename = remote->name;
1407         int mirror = remote->mirror;
1408         struct strbuf refspec = STRBUF_INIT;
1409
1410         for (; *branches; branches++)
1411                 add_branch(key, *branches, remotename, mirror, &refspec);
1412
1413         strbuf_release(&refspec);
1414 }
1415
1416 static int set_remote_branches(const char *remotename, const char **branches,
1417                                 int add_mode)
1418 {
1419         struct strbuf key = STRBUF_INIT;
1420         struct remote *remote;
1421
1422         strbuf_addf(&key, "remote.%s.fetch", remotename);
1423
1424         remote = remote_get(remotename);
1425         if (!remote_is_configured(remote, 1))
1426                 die(_("No such remote '%s'"), remotename);
1427
1428         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1429                 strbuf_release(&key);
1430                 return 1;
1431         }
1432         add_branches(remote, branches, key.buf);
1433
1434         strbuf_release(&key);
1435         return 0;
1436 }
1437
1438 static int set_branches(int argc, const char **argv)
1439 {
1440         int add_mode = 0;
1441         struct option options[] = {
1442                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1443                 OPT_END()
1444         };
1445
1446         argc = parse_options(argc, argv, NULL, options,
1447                              builtin_remote_setbranches_usage, 0);
1448         if (argc == 0) {
1449                 error(_("no remote specified"));
1450                 usage_with_options(builtin_remote_setbranches_usage, options);
1451         }
1452         argv[argc] = NULL;
1453
1454         return set_remote_branches(argv[0], argv + 1, add_mode);
1455 }
1456
1457 static int get_url(int argc, const char **argv)
1458 {
1459         int i, push_mode = 0, all_mode = 0;
1460         const char *remotename = NULL;
1461         struct remote *remote;
1462         const char **url;
1463         int url_nr;
1464         struct option options[] = {
1465                 OPT_BOOL('\0', "push", &push_mode,
1466                          N_("query push URLs rather than fetch URLs")),
1467                 OPT_BOOL('\0', "all", &all_mode,
1468                          N_("return all URLs")),
1469                 OPT_END()
1470         };
1471         argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1472
1473         if (argc != 1)
1474                 usage_with_options(builtin_remote_geturl_usage, options);
1475
1476         remotename = argv[0];
1477
1478         remote = remote_get(remotename);
1479         if (!remote_is_configured(remote, 1))
1480                 die(_("No such remote '%s'"), remotename);
1481
1482         url_nr = 0;
1483         if (push_mode) {
1484                 url = remote->pushurl;
1485                 url_nr = remote->pushurl_nr;
1486         }
1487         /* else fetch mode */
1488
1489         /* Use the fetch URL when no push URLs were found or requested. */
1490         if (!url_nr) {
1491                 url = remote->url;
1492                 url_nr = remote->url_nr;
1493         }
1494
1495         if (!url_nr)
1496                 die(_("no URLs configured for remote '%s'"), remotename);
1497
1498         if (all_mode) {
1499                 for (i = 0; i < url_nr; i++)
1500                         printf_ln("%s", url[i]);
1501         } else {
1502                 printf_ln("%s", *url);
1503         }
1504
1505         return 0;
1506 }
1507
1508 static int set_url(int argc, const char **argv)
1509 {
1510         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1511         int matches = 0, negative_matches = 0;
1512         const char *remotename = NULL;
1513         const char *newurl = NULL;
1514         const char *oldurl = NULL;
1515         struct remote *remote;
1516         regex_t old_regex;
1517         const char **urlset;
1518         int urlset_nr;
1519         struct strbuf name_buf = STRBUF_INIT;
1520         struct option options[] = {
1521                 OPT_BOOL('\0', "push", &push_mode,
1522                          N_("manipulate push URLs")),
1523                 OPT_BOOL('\0', "add", &add_mode,
1524                          N_("add URL")),
1525                 OPT_BOOL('\0', "delete", &delete_mode,
1526                             N_("delete URLs")),
1527                 OPT_END()
1528         };
1529         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1530                              PARSE_OPT_KEEP_ARGV0);
1531
1532         if (add_mode && delete_mode)
1533                 die(_("--add --delete doesn't make sense"));
1534
1535         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1536                 usage_with_options(builtin_remote_seturl_usage, options);
1537
1538         remotename = argv[1];
1539         newurl = argv[2];
1540         if (argc > 3)
1541                 oldurl = argv[3];
1542
1543         if (delete_mode)
1544                 oldurl = newurl;
1545
1546         remote = remote_get(remotename);
1547         if (!remote_is_configured(remote, 1))
1548                 die(_("No such remote '%s'"), remotename);
1549
1550         if (push_mode) {
1551                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1552                 urlset = remote->pushurl;
1553                 urlset_nr = remote->pushurl_nr;
1554         } else {
1555                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1556                 urlset = remote->url;
1557                 urlset_nr = remote->url_nr;
1558         }
1559
1560         /* Special cases that add new entry. */
1561         if ((!oldurl && !delete_mode) || add_mode) {
1562                 if (add_mode)
1563                         git_config_set_multivar(name_buf.buf, newurl,
1564                                                        "^$", 0);
1565                 else
1566                         git_config_set(name_buf.buf, newurl);
1567                 goto out;
1568         }
1569
1570         /* Old URL specified. Demand that one matches. */
1571         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1572                 die(_("Invalid old URL pattern: %s"), oldurl);
1573
1574         for (i = 0; i < urlset_nr; i++)
1575                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1576                         matches++;
1577                 else
1578                         negative_matches++;
1579         if (!delete_mode && !matches)
1580                 die(_("No such URL found: %s"), oldurl);
1581         if (delete_mode && !negative_matches && !push_mode)
1582                 die(_("Will not delete all non-push URLs"));
1583
1584         regfree(&old_regex);
1585
1586         if (!delete_mode)
1587                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1588         else
1589                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1590 out:
1591         strbuf_release(&name_buf);
1592         return 0;
1593 }
1594
1595 int cmd_remote(int argc, const char **argv, const char *prefix)
1596 {
1597         struct option options[] = {
1598                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1599                 OPT_END()
1600         };
1601         int result;
1602
1603         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1604                 PARSE_OPT_STOP_AT_NON_OPTION);
1605
1606         if (argc < 1)
1607                 result = show_all();
1608         else if (!strcmp(argv[0], "add"))
1609                 result = add(argc, argv);
1610         else if (!strcmp(argv[0], "rename"))
1611                 result = mv(argc, argv);
1612         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1613                 result = rm(argc, argv);
1614         else if (!strcmp(argv[0], "set-head"))
1615                 result = set_head(argc, argv);
1616         else if (!strcmp(argv[0], "set-branches"))
1617                 result = set_branches(argc, argv);
1618         else if (!strcmp(argv[0], "get-url"))
1619                 result = get_url(argc, argv);
1620         else if (!strcmp(argv[0], "set-url"))
1621                 result = set_url(argc, argv);
1622         else if (!strcmp(argv[0], "show"))
1623                 result = show(argc, argv);
1624         else if (!strcmp(argv[0], "prune"))
1625                 result = prune(argc, argv);
1626         else if (!strcmp(argv[0], "update"))
1627                 result = update(argc, argv);
1628         else {
1629                 error(_("Unknown subcommand: %s"), argv[0]);
1630                 usage_with_options(builtin_remote_usage, options);
1631         }
1632
1633         return result ? 1 : 0;
1634 }